code: def test_rfb_app():
      # Raw
      app_backend = _jupyter_rfb.ApplicationBackend()
  
      # Test that run and quit don't do anything - Jupyter is an interactive session!
      app_backend._vispy_run()
      app_backend._vispy_quit()
  
file_path: vispy/vispy/app/backends/tests/test_rfb.py
imports: import numpy
  from vispy import gloo
  from vispy.app import Application, Canvas
  from vispy.app.backends import _jupyter_rfb
  from vispy.testing import run_tests_if_main, requires_application
  import pytest
label_desc: Use image node_id 1 for calling a global function with example usage: test_rfb_app() without return types